<template>
  <nav-bar>
    <div></div>
    <div slot="left" class="back" @click="backClick">
      <img src="~assets/img/common/back.svg" alt="">
    </div>
    <div slot="center" class="title">
      <div v-for="(item, index) in titles" class="title-item" :class="{active: currentIndex === index}"
           @click="titleClick(index)" :key="item">
        {{ item }}
      </div>
    </div>
  </nav-bar>
</template>

<script>import NavBar from "@/components/common/navbar/NavBar";

export default {
  name: "DetailNavBar",
  components: {
    NavBar
  },
  data() {
    return {
      titles: ['商品', '参数', '评论', '推荐',],
      currentIndex: 0,
    }
  },
  methods: {
    //切换标题
    titleClick(index) {
      this.currentIndex = index;
      this.$emit('titleClick',index);
    },
    //返回上一页
    backClick() {
      this.$router.back()
      // this.$router.go(-1);
    }
  },
}
</script>

<style scoped>
.title {
  display: flex;
  font-size: 13px;
}

.title-item {
  flex: 1;
}

.active {
  color: var(--color-high-text);
}

.back img {
  margin-top: 11px;
}
</style>
